Greatest Common Factor of 20, 33, 15, 61

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 20, 33, 15, 61 by common division method
• Greatest Common Factor of 20, 33, 15, 61 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 33

List of positive integer factors of 33 that divides 33 without a remainder.

1,3,11,33

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

Greatest Common Factor

We found the factors 20,33,15,61 . The biggest common factor number is the GCF number.
So the greatest common factor 20,33,15,61 is 1.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 73, 14, 99, 30
• GCF of 11, 41, 31, 30
• GCF of 83, 81, 39, 87
• GCF of 40, 25, 38, 85
• GCF of 52, 60, 16, 27

1. What is the GCF of 20, 33, 15, 61?

Answer: GCF of 20, 33, 15, 61 is 1.

2. How to Find the GCF of 20, 33, 15, 61

Answer: Greatest Common Factor(GCF) of 20, 33, 15, 61 = 1

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(20, 33, 15, 61) = 1.